just to add to the discussion:
I will be 56 years old in 4 weeks, and I've been a crossfitter for 4 years and never felt better in my life.
Athlete: Bobby Worley | CrossFit Games
oh, and I'm also building a Hurricane Cobra
Hurricane HM-2008 build in progress...
Craft Perfomance 427W / 600hp / 600tq - TKO600
I love it and I need it I bleed it ~ Yeah it's a wild hurricane ~ Alright, hold tight, I'm a highway star!!